S chool of Athens by Raphael (Raffaello Sanzio da Urbino), 1511. Fresco. Pinacoteca Ambrosiana, Vatican Museum. Public Domain. Greek thinkers include Epicurus, Pythagoras, Parmenides, Socrates, Plato and Aristotle (center), Ptolemaios, gods Apollo and Athena, Herakleitos, Diogenes of Sinope, Plotinos, Hypatia (with a white robe, lower left), Alexander the Great upper left wearing a military uniform) and Euclid, lower right, in a red robe, drawing a geometrical figure. Prologue PLEASE GO TO THE LAST PARAGRAPH, LINE 3, AND CLICK ON THE WORD PRESENTATION IN ORDER TO WATCH A YOUTUBE VIDEO OF MY DISCUSSION IN GREEK OF THE HISTORY AND SIGNIFICANCE OF THE GREEK TRADITIONS. All traditions are human inventions that last briefly or, sometimes, forever. Some of those innovations are extremely useful and last, other vanish, only to be replaced by better alternatives. We don’t know when traditions, much less history, began. There are periods of human activity d...